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Recording artist Rihanna has signed a deal with hip cosmetic brand Mac.

Updated at 7:15 AM PST on Wednesday, Feb 20, 2013

The "Stay" singer isn't just celebrating turning 25 Wednesday with cake, cake, cake--she's also inked a deal with MAC Cosmetics.

Chris Brown's on-off girlfriend told WWD that working with the famed makeup company was a "no-brainer."

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"When you think of makeup, the brand that pops into your mind--for something legit--is MAC," she said. "Whatever color you want, it's like, 'Let's go to MAC.' I've been using MAC on tour for such a long time, it was a natural fit for me. I have always loved makeup, and I always said that if I do it, I want to do it with a credible brand."

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The first product to launch will be RiRi Woo, a lipstick inspired by the singer's favorite MAC red. Its release will coincide with Rihanna's Diamonds Tour concerts on May 4 and 5 in Brooklyn. In all, four collections, called RiRi Hearts MAC, will be released throughout 2013.